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Rod I

File rod.k demonstrates wave propagation in one dimension using bar elements. Download is available in the download section of this document.

Keywords

Keywords

This example has been taken from the introductory class of Prof. Dr. Ala Tabiei. Example name: rod.k

The used Keywords in alphabetical order.

*BOUNDARY_SPC_NODE
*CONTROL_TERMINATION
*CONTROL_TIMESTEP
*DATABASE_BINARY_D3PLOT
*DATABASE_ELOUT
*DATABASE_GLSTAT
*DATABASE_HISTORY_BEAM_SET
*DATABASE_HISTORY_NODE_SET
*DATABASE_MATSUM
*DATABASE_NODFOR
*DATABASE_NODOUT
*DEFINE_CURVE
*ELEMENT_BEAM
*END
*KEYWORD
*LOAD_NODE_POINT
*MAT_ELASTIC
*NODE
*PART
*SECTION_BEAM
*SET_BEAM_LIST
*SET_NODE_LIST
*TITLE

Reduced Input

Reduced Input

This example has been taken from the introductory class of Prof. Dr. Ala Tabiei. Example name: rod.k

*Node and *Element Cards are removed.

  *KEYWORD
  *TITLE
  Wave Propagation In Rod, bar element
  $
  $ This problem is to demonstrate wave propagation in one dimension
  $ Demonstrate potential problems with 32 Bit machines
  $ Time step calculation for rod elements
  $ Demonstrate time integration stability limits
  $ units: mm, ton, N
  $ A. Tabiei 3/3/98
  $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
  *CONTROL_TIMESTEP
  $   DTINIT    TSSFAC
      0.0000    0.9000
  *CONTROL_TERMINATION
  $   ENDTIM
    0.000925
  $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
  *DATABASE_BINARY_D3PLOT
  $  DT/CYCL
     0.00001   
  *DATABASE_MATSUM
  $  DT/CYCL
   1.000E-06
  *DATABASE_NODOUT
  $  DT/CYCL
   1.000E-06
  *DATABASE_ELOUT
  $  DT/CYCL
   1.000E-06
  *DATABASE_NODFOR
  $  DT/CYCL
   1.000E-06
  *DATABASE_GLSTAT
  $  DT/CYCL
   1.000E-06
  *DATABASE_history_node_set
  $       ID
           1 
  *DATABASE_history_beam_set
  $       ID
           1
  $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
  *SET_NODE_LIST
  $      SID
           1
  $     NID1
          2         22
  *SET_BEAM_LIST
  $      SID
           1
  $       K1
          20
  $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
  *MAT_elastic
  $      MID        RO         E        PR
           1 7.890E-09 2.068E+05 3.000E-01
  *PART
  BEAM:
  $      PID       SID       MID
           1         1         1
  *SECTION_BEAM
  $      sid    elform
           1         3
  $        a
         645
  $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
  *DEFINE_CURVE
  $     lcid
           1
  $           abscissa            ordinate
  0.00000000000000E+00 1.0000000000000E+00
  2.00000000000000E-03 1.0000000000000E+00
  *LOAD_NODE_POINT
  $NODE/NSID       DOF      LCID        SF       CID
           2         1         1 5.000E+02         0
  $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
  *BOUNDARY_SPC_NODE
  $      NID       CID         X         Y         Z        RX        RY        RZ
           1         0         1         1         1         1         1         1
  $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 
  *NODE
  $    NID               X               Y               Z 
  $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
  *ELEMENT_BEAM
  $    EID     PID      N1      N2
  $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8     
  *END

Figures

Figures

This example has been taken from the introductory class of Prof. Dr. Ala Tabiei. Example name: rod.k

image01.gif

image02.gif

Animated Result

Animated Result

This example has been taken from the introductory class of Prof. Dr. Ala Tabiei. Example name: rod.k

Result

Download

Download

This example has been taken from the introductory class of Prof. Dr. Ala Tabiei. Example name: rod.k